.sel-blue {
  a: b;
}
.sel-green {
  a: b;
}
.sel-red {
  a: b;
}
.set {
  one-1: blue;
  two-2: green;
  three-3: red;
}
.set-2 {
  one-1: blue;
  two-2: green;
  three-3: red;
}
